George r



(Nor/100181.)

G. R. BACON.

TYPE MULD. No. 309,596. Patented Deo. z3, 1884.

N. PETERS. Phowuxhagmphnr. wmngwn, D. C.

nutren rares arena? rrreno (.l-EORG-E BACON, -OF BROOKLYN, NEV YORK.

TYPEnll/HOLD.

:'EFECIEICATIQN forming part of Letters PatenirNo. 309,596, datedl December 23, 1884.

Application filed December 13, 1883. (No model.) l

To a/ZZ whom, it 712/601/ concern:

Be it known that I, G-nonon R. 'Licong a citizen of the United States, residing in'the city of Brooklyn, county of Kings, and State of New York, have invented certain new and useful Improvements in Type-Molds, fully described and represented in the following speciiication and the accompanying drawings, forniing a part of the same,

In said drawings, Figure l is a longitudinal sectional elevation as seen from the matrix side of the mold now in common use; Fig. 2, an elevation ot' the improved mold as seen from the matrix side 5 Fig. 3, a left-hand end elevation of the same. Fig. et is a plan view of the interior of the bottom member of the improved mold. Fig. 5 is a plan view of the interior of the top meniber ol the improved mold. Fig. (S is a longitudinal section of the mold on line .r of Fig. 3, the parts being seen in the same relation as are those oi' Fig. l. Fig. 7 is a cross-sectional elevation on the line y of Fig. 2. Fig. S is a detail view showing construction ol." the nick-formers; and Fig. 9 is a sectional elevation of a poriion of a mold, showing the common mode of' secu ring the nicleiormers.

In constructing the molds for ii'ypf-reasting machines it has heretoiore been the common. prac-tice to form the bed-piece in both the top and bottoni members of the mold ol' a single piece, with attached lifts suited to the thickness of the body of the type to be cast, which lifts thus made in detached pieces require to be attached in place by screws, and to be most aecuratelyitted, so as to forni a close joint with the carriage in each member of the mold. In practice the hot metal used causes an unequal expansion of the many pieces composing the mold, which vary in relative size, and frequently these lifts move so far from the bed as to not only destroy this nicely-formed joint, but make an opening into which the molten metal may enter and form a side sprue on the corner of the type-body. These lifts also slue out of place far enough to project a corner that forms a hardmetal abutment, against which the soft matrix; is brought into contact each time a type is cast, which last condition of things soon results in great injury to the matrix, which is a costly part of a type-casting machine. The old construction, also, has the nick-formels made from short lengths of half-round wire entered into and held in recesses out in the under surface of the lift that isattachcd to the bed-piece, which wires thus present portions extending beyond the lift over the low part of the bed-piece ofthe mold to operate as nick* formers; and although these extending portions or nickformers are closely fitted to the face' of said bed-piece, they are unattached thereto, and are therefore liable to curl up, in consequence of' uneven er:- pansion, and form a space beneath them, into which the metal may ilow and form a sprue, which not only spoils the type, but frequently' causes the niclcformers to be bent out of place in removing the cast type from themold, and

another defect is in the jet-piece.

rlhe purpose and object of the present invention is a construction of parts that will obviate these defects; and the invention consists i n forming each member of the mold ot' a solid body-block and bed-piece, in uniting said body-block and bed-piece together by a longitudinal tie and to the bed-plate by screws, in providing the mold with solid niek-formers, and in the mode ol.' securing the jetpieces in place.

For the purpose ol' this specification the type-1nolds are alone illustrated herein, their mode of mounting and use in a typecasting machine being the saine as those of ordinary construction, and therefore well understood by persons skilled in theart of casting type. It may be explained, however, that the lower member of the mold is usually attached in au inclined position to a carrier, and that the upper member is hinged to said carrier so as to open and close, while the matrix, which co-operates with the said members of the mold, is hinged to the carrier by a spring, and eapable of moving slightly to and from the mold as the latter closes and opens.

In the common construction (see Fi. l) the lower member of a type-mold consists of a bed-plate, A, by which it is attached to the carrier, which plate supports along bed, B, that is made of a single piece, and provided with a plate or lift, C, formed of a separate piece of a thickness equal to that ofthe body oi' the type. The upper member of the mold IOO consists of a bed-plate, D, by which it is attached to the carrier, of a long bed, E, in a single piece, and a lift, F, formed of a single piece. The bed B of the lower member is provided with nick-formers a by means of short lengths of half-round wire fastened in place by being inserted in grooves in the lift C and clamped between it and the bed B, the projecting part-s of the niclr-formers, or those portions which form lthe nicks in the types, lapping onto the face ofthe bed B. The lift carried by the upper member of the mold has grooves c so arranged relatively to l[he nick-formers a as to provide for the longitudinal adjustment of the upper and lower members of the mold when the opening o, that determines the size of the body of the type, is to be increased or diminished. The bed B is secured to the bed-plate A by means of screws b d, and the lift C is held t0 the bed by three screws, g, only two of which are shown. The bed E is secured to the bed-plate D by screws h 7c, and its lift F is held to the bed by three screws, q, only two of which are illustrated. The screws g q respectively pass through the bed-plates A D and beds B E, and serve in some degree to aid in holding said beds to their bed-plates.

In the improved construction the bed-plates A D of both members of the mold are of lik-e construction, and perform the same functions as in the old construction, and, like them, the plate A has holes e, by which the lower member of the mold is attached, through screws, to its carriage, while the plate D is provided with` tapped holes to receive screws attaching the top member to its carriage. In the new construction each member of the mold is provided with a bed'composed of two pieces,

one constituting the bed proper, and the other what may be termed a body-block. Thus the bed-plate A has a bed-piece, 10, secured to said plate by means of two screws, 11 12, and a bodyblock, 13, that is firmly secured to the plate by means of two screws, 14 15.

The bed-plate D has abcd-piece, 16, secured to the plate by means of two screws, 17 18, anda body-block, 19, secured to the plate by two screws, 20 21.

The body-blocks 13 19 and the bed-pieces 10 16 are each made in a single piece of met-al, preferably fine steel, and these blocks and bedpieces are relatively of such thickness as will cause the body-blocks to project beyond the bedpieces sufficiently to correspond with the thickness the type is to be, or, in other words,

form, when the two members of the mold are properly adj usted longitudinally, a recess suited to the formation of the body of a type. The body-block 13 and abutting companion bed-piece, 10, and the body-block 19 and abutting companionbed-piece, 16, are respectively held in their closely-fitting longitudinal relation by means of longitudinal screws 22 23, that enter tapped recesses in the bed-pieces.

f The body-blocks 13 19, it will be observed,

embody in a single piece the necessary dimensions to provide the space within which to cast the body of the type, and hence avoidthe addition of a separate piece for that purpose, as the lift C in the old construction. Thus the body-blocks 13 19 are composed of single solid blocks of metal about equal in extent to those composing the bed-pieces 10 16, whence results an even expansion and contraction of the entire bed under the influence of the heated metal used in the molds, which structure also yavoids the defective operation heretofore pointed out as due to the use of thin pieces of metal, as the lifts of the old structure.

The improved structure also enables the use ofthe four lateral and the longitudinal holding-screws, as 11, 12, 14, 15, and22, or 17 18, 20, 21, and 23,whereby the body-blocks 13 19 and bed-pieces 10 16 are strongly secured to the -bed-plates A D and against longitudinal displacement, the absence of holding-screws for lifts, as in the old device, permitting their use without weakening the parts.

This improved structure further enables the nick-formels to be strongly constructed and rigidly attached throughout their entire length, as will now be explained, it being iirst understood that the slots 2S, formed inthe face of the body-block 19, are the same as slots formed in the lift F of the old construction, the same being cut to conform to the nickformers and permit the upper andlower members of the mold to be adjusted longitudinally for the casting of types ranging one or more lines in size.

The bed-piece 10 is provided for a suitable distance with slots 30, having undercut or recessed sides, and the nick-formers 31 are `fashioned out of metal,and have a body-formation, preferably semicircular, as seen in transverse section, Figs. 7 and S, that is suited to the formation of the nicks in types. They are constructed with shoulders 3, that constitute rests by which they are snugly seated upon the bed-plate 10, and with a downward extension that is provided with lateral side projections adapted to fit within the recessed sides of the slots 30 and retain them securely in place. As embodied herein, this means for securing the nick-formers in place upon the bed-plate is an ordinary dovetail joint. Thus constructed, suitable lengths may be driven into the slots 30, and thus be strongly secured throughout their entire length, both by the shoulders 3 and extension projecting into the slots 30, thus practically riveted in place and forming a solid body with the bedpiece 10, that avoids any loose part that may curl up or become disarranged, either by the heat of the metal or otherwise. This construction also enables the nick-formers to be extended in the piece 10 as far as may be necessary to suit large sizes of type and cause them to be cast with nicks extending from side to side, whereas in the old construction it was desirable to limit the extent of these lOl ITO

nicks in types ol a large size, so that said nicks terminated in the body of the type and did not reach one edge.

The recess for the reception of the matriX is provided between register-pieces 50 40, the latter of which has a cap called a stooh 41, secured to it by a screw, 42, the special function oi which is to detach any type that may cling to the upper member ofthe mold. The registerpiece 40 is held in place by screws @L3 4:4,tapped into the body-block 13, and a screw, d5, entered into it after passing through the bed-plate A. The register-piece 50is secured to the bodyblock 19 by screws 51 52, and to the bed-plate D by a screw, 53. These regis ter-pieces Yl'orm guides holding the two members of the mold in proper position laterally, the opposing guides consisting` of cheek-pieces (i0 70,secured,respectively,to the body-blocks 1319 by screws (il 71.

The jet-pieces S0 90, which are stepped blocks that form an opening more or less great, as the upper and lower members of the mold are relatively adjusted, constitute the i11-gate of the 1nol`d,within which the jet or surplus metal is east upon the foot o1' the type. Thesejetpieces were formerly sim ply secured to the bedplates; but in order to hold them snugly in place and maintain a tight joint between them and the body-blocks and bed-pieces, to cause the Afoot of the type to be east aecurately,in the improved construction they are secured both lo the body-block and to the bed-plates A l). rlhus secured, these liet-pieces are prevented, when the molds contract, after being greatly expanded by the heat, from becoming separated from the body-block or bed-piece and forming a space into which the metal may run, and thus cause the foot oi' the type to be rough and ragged.

ln the improved construction the jet-pieces are respectively held by :tour screws each,the.

piece 3() having two screws, S1 S2, that hold it to .the bed-plate A, and two screws, 33 Si, thathold it to the bed-piece 10 and bod y-bloek 13. The piece 9() is similarly held by screws 91 92 passing through the bed-plate, and screws 93 94 entering the bed-piece 16 and body-block 19.

In this improved construction the crossscrews Si and 9192, which hold the ietpieces to the body-blocks and bed-pieces,will, when the mold expands, expand with it, and consequently when it contracts will contract with it, and thus the `jet-pieces will be constantly kept in proper place, or in close coniact with the body-blocks and bedpieees,and

hence no space will be opened between them and the body-blocks or bed-pieces to receive the molten metal and form a sprue that will destroy the foot of the type. The solid construction ot' the body-blocks 13 19, removing the necessity of using screws to hold lifts, provides room in the parts at the proper points to enable the use of the screws to hold the jet-blocks in both directions.

These improvements permit the construction of type-molds at small expense, and produce a structure that may be continuously used for a long 'period of time without derangements of parts, necessitating stoppage and repair.

That is claimed is`- 1. A type-mold the two members of which are each composed of a body-bloei; and bedpiece abutting together and secured to the bedplate, said body-blocks each being formed in a single piece and of a thickness suitably greater than the companion bed-pieees,to provide for the formation of the type-lbody, substantially as described.

2. A. type-mold the two members of which are each composed of a solid body-block and bed-piece secured, respectively, to the bedplate by screws and united together by a longitudinal screw, substantially as described.

3. 'ln a type-mold, the combination, with the bed-pieee of nick-formers secured there to by means of their lateral projections and recessed or undercut slots in the bed-piece, substantially as described.

4. lin a type-mold, the combination, with the bedepiece, slotted, as described, to receive niek-ioimers, of the niCk-brmers and the abutting body-block, substantially as described.

5. lu a type-mold consisting oi' two members,.each composed of a solid body-block and bed-piece united to the bed-plate by screws, and jetpieces united to the bed-picce by screws and to the body-block and bed-piece by screws, substantially as described.

(l. In a ty} )e-mold,the eombination,with the bed-piece, slotted, as described, to receive niekibrmers, ot' the nick-formers provided with shoulders, as 3, and the abutting body-block, substantially as described.

ln testimony whereof I have hereunto set my hand in the presence of two subscribing witnesses.

ono. n. BACON.

lVitnesses:

(rno. H. GRAHAM, A. N. Jfisiennli,

IOO 

